<template>
    <div>
        <h1 v-text="msg" ref="title"></h1>
        <button @click="showDOM" ref="btn">点我输出上方的DOM元素</button>
        <School ref="sch"/>
    </div>
</template>

<script>
    //引入School组件
    import School from './components/School.vue'
    export default {
        name:'App',
        components:{School},
        data() {
            return {
                msg:'欢迎学习Vue！'
            }
        },
        methods:{
            showDOM(){
                console.log(this.$refs.title)   //真实DOM元素
                console.log(this.$refs.btn)    //真实DOM元素
                console.log(this.$refs.sch)    //School组件的实例对象 （vc）
            }
        }
    }
</script>

<style>

</style>